REV. A

ADP3610

–8–

LOAD CURRENT – mA

6.0

0

0

4.5

3.0

1.5

100

200

300

400

6 – 5.62

0.32

= 1.18

(5.62, 320 mA)

Figure 21. Load Regulation

Unregulated Voltage Doubler

Figure 20 shows a typical application for the ADP3610 in un-

regulated voltage doubling mode. The inherent limit on the

output voltage for a voltage doubler is two times the input volt-

age. However, due to the losses in the switches and ESR of

capacitors, this scaling factor is somewhat reduced. Figure 21

shows the magnitude of unregulated output voltage as the load

current is increased from 0 mA to 320 mA. This gives a measure

internal switch resistance and ESR of the capacitors.

16

15

14

13

12

11

10

9

1

2

3

4

5

6

7

8

SD

CM1

GND

GND

GND

CM2

CP1

GND

CP2

ADP3610

1 F

INPUT

OUTPUT

@320mA

1 F

CP1

2.2 F

1 F

CP2

2.2 F

Figure 20. Unregulated Voltage Doubler